Cyber Forensics From Data to Digital Evidence

, by Marcella, Albert J.; Guillossou, Frederic

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ISBN: 9781118273661 | 1118273664
Cover: Hardcover
Copyright: 5/1/2012

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An explanation of the basic principles of data This book explains the basic principles of data as building blocks of electronic evidential matter, which are used in a cyber forensics investigations. The entire text is written with no reference to a particular operation system or environment, thus it is applicable to all work environments, cyber investigation scenarios, and technologies. The text is written in a step-by-step manner, beginning with the elementary building blocks of data progressing upwards to the representation and storage of information. It inlcudes practical examples and illustrations throughout to guide the reader.

Preface	p. xiii
Acknowledgments	p. xvii
The Fundamentals of Data	p. 1
Base 2 Numbering System: Binary and Character Encoding	p. 2
Communication in a Two-State Universe	p. 3
Electricity and Magnetism	p. 3
Building Blocks: The Origins of Data	p. 4
Growing the Building Blocks of Data	p. 5
Moving Beyond Base 2	p. 7
American Standard Code for Information Interchange	p. 7
Character Codes: The Basis for Processing Textual Data	p. 10
Extended ASCII and Unicode	p. 10
Summary	p. 12
Notes	p. 13
Binary to Decimal	p. 15
American Standard Code for Information Interchange	p. 16
Computer as a Calculator	p. 16
Why Is This Important in Forensics?	p. 18
Data Representation	p. 18
Converting Binary to Decimal	p. 19
Conversion Analysis	p. 20
A Forensic Case Example: An Application of the Math	p. 20
Decimal to Binary: Recap for Review	p. 22
Summary	p. 23
The Power of HEX: Finding Slivers of Data	p. 25
What the HEX?	p. 26
Bits and Bytes and Nibbles	p. 27
Nibbles and Bits	p. 29
Binary to HEX Conversion	p. 30
Binary (HEX) Editor	p. 34
The Needle within the Haystack	p. 39
Summary	p. 41
Notes	p. 42
Files	p. 43
Opening	p. 44
Files, File Structures, and File Formats	p. 44
File Extensions	p. 45
Changing a File's Extension to Evade Detection	p. 47
Files and the HEX Editor	p. 53
Files Signature	p. 55
ASCII Is Not Text or HEX	p. 57
Value of File Signatures	p. 58
Complex Files: Compound, Compressed, and Encrypted Files	p. 59
Why Do Compound Files Exist?	p. 60
Compressed Files	p. 61
Forensics and Encrypted Files	p. 64
The Structure of Ciphers	p. 65
Summary	p. 66
Notes	p. 67
Common File Extensions	p. 68
Files Signature Database	p. 73
Magic Number Definition	p. 77
Compound Document Header	p. 79
The Boot Process and the Master Boot Record (MBR)	p. 85
Booting Up	p. 87
Primary Functions of the Boot Process	p. 87
Forensic Imaging and Evidence Collection	p. 90
Summarizing the BIOS	p. 92
BIOS Setup Utility: Step by Step	p. 92
The Master Boot Record (MBR)	p. 96
Partition Table	p. 102
Hard Disk Partition	p. 103
Summary	p. 110
Notes	p. 111
Endianness and the Partition Table	p. 113
The Flavor of Endianness	p. 114
Endianness	p. 116
The Origins of Endian	p. 117
Partition Table within the Master Boot Record	p. 117
Summary	p. 125
Notes	p. 127
Volume versus Partition	p. 129
Tech Review	p. 130
Cylinder, Head, Sector, and Logical Block Addressing	p. 132
Volumes and Partitions	p. 138
Summary	p. 142
Notes	p. 144
File Systems-FAT 12/16	p. 145
Tech Review	p. 145
File Systems	p. 147
Metadata	p. 149
File Allocation Table (FAT) File System	p. 153
Slack	p. 157
HEX Review Note	p. 160
Directory Entries	p. 161
File Allocation Table (FAT)	p. 163
How Is Cluster Size Determined?	p. 167
Expanded Cluster Size	p. 169
Directory Entries and the FAT	p. 170
FAT Filing System Limitations	p. 174
Directory Entry Limitations	p. 176
Summary	p. 177
Partition Table Fields	p. 179
File Allocation Table Values	p. 180
Directory Entry Byte Offset Description	p. 181
FAT 12/16 Byte Offset Values	p. 182
FAT 32 Byte Offset Values	p. 184
The Power of 2	p. 186
File Systems-NTFS and Beyond	p. 189
New Technology File System	p. 189
Partition Boot Record	p. 190
Master File Table	p. 191
NTFS Summary	p. 195
exFAT	p. 196
Alternative Filing System Concepts	p. 196
Summary	p. 203
Notes	p. 204
Common NTFS Systems Defined Attributes	p. 205
Cyber Forensics: Investigative Smart Practices	p. 207
The Forensic Process	p. 209
Forensic Investigative Smart Practices	p. 211
The Initial Contact, the Request	p. 211
Evidence Handling	p. 216
Acquisition of Evidence	p. 221
Data Preparation	p. 229
Time	p. 238
Summary	p. 239
Note	p. 240
Time and Forensics	p. 241
What Is Time?	p. 241
Network Time Protocol	p. 243
Timestamp Data	p. 244
Keeping Track of Time	p. 245
Clock Models and Time Bounding: The Foundations of Forensic Time	p. 247
MS-DOS 32-Bit Timestamp: Date and Time	p. 248
Date Determination	p. 250
Time Determination	p. 254
Time Inaccuracy	p. 258
Summary	p. 259
Notes	p. 260
Investigation: Incident Closure	p. 263
Forensic Investigative Smart Practices	p. 264
Investigation (Continued)	p. 264
Communicate Findings	p. 265
Characteristics of a Good Cyber Forensic Report	p. 266
Report Contents	p. 268
Retention and Curation of Evidence	p. 269
Investigation Wrap-Up and Conclusion	p. 273
Investigator's Role as an Expert Witness	p. 273
Summary	p. 279
Notes	p. 280
A Cyber Forensic Process Summary	p. 283
Binary	p. 284
Binary-Decimal-ASCII	p. 285
Data Versus Code	p. 287
HEX	p. 288
From Raw Data to Files	p. 288
Accessing Files	p. 289
Endianness	p. 290
Partitions	p. 291
File Systems	p. 291
Time	p. 292
The Investigation Process	p. 292
Summary	p. 295
Appendix: Forensic Investigations, ABC Inc.	p. 297
Glossary	p. 303
About the Authors	p. 327
Index	p. 329
Table of Contents provided by Ingram. All Rights Reserved.

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Cyber Forensics From Data to Digital Evidence

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